<template>
  <div style="display: flex;">
    <hamburger :toggle-click="toggleSideBar" :is-active="sidebar.opened" class="hamburger-container"/>

    <el-breadcrumb class="app-breadcrumb" separator="/">
      <transition-group name="breadcrumb">
        <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">
          <span v-if="item.redirect==='noredirect'||index==levelList.length-1"
                class="no-redirect">{{ item.meta.title }}</span>
          <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>
        </el-breadcrumb-item>
      </transition-group>
    </el-breadcrumb>
  </div>
</template>

<script>
  import pathToRegexp from 'path-to-regexp'
  import Hamburger from '@/components/Hamburger'
  import {mapGetters} from 'vuex'

  export default {
    components: {
      Hamburger
    },
    computed: {
      ...mapGetters([
        'sidebar',
      ])
    },
    data() {
      return {
        levelList: null
      }
    },
    watch: {
      $route() {
        this.getBreadcrumb()
      }
    },
    created() {
      this.getBreadcrumb()
    },
    methods: {
      toggleSideBar() {
        this.$store.dispatch('ToggleSideBar')
      },
      getBreadcrumb() {
        let matched = this.$route.matched.filter(item => item.name)

        const first = matched[0]
        if (first && first.name !== 'dashboard') {
          matched = [{path: '/dashboard', meta: {title: '首页'}}].concat(matched)
        }

        this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
      },
      pathCompile(path) {
        // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
        const {params} = this.$route
        var toPath = pathToRegexp.compile(path)
        return toPath(params)
      },
      handleLink(item) {
        const {redirect, path} = item
        if (redirect) {
          this.$router.push(redirect)
          return
        }
        this.$router.push(this.pathCompile(path))
      }
    }
  }
</script>

<style rel="stylesheet/scss" lang="scss" scoped>
  .app-breadcrumb {
    /*border-bottom: solid #1ab394 2px;*/
  }

  .app-breadcrumb.el-breadcrumb {
    display: block;
    font-size: 14px;
    line-height: 30px;
    padding-left: 10px;
    margin-top: 4px;
    width: 100%;

    .no-redirect {
      color: #97a8be;
      cursor: text;
    }
  }

  .hamburger-container {
    line-height: 30px;
    height: 30px;
    margin-top: 8px;
    margin-left: 8px;
    /*float: left;*/
    /*padding: 0 10px;*/
    cursor: pointer;
  }
</style>
